The Sims 2 cheats
To access the 'Cheat' window press Ctrl + Shift + C then enter the following codes:

List cheats:
Help -all

Expands or contracts Cheat window:
Expand

Closes Cheat window:
Exit

Clears all cheat codes on the screen, but codes are still in effect:
Clear

Increases game performance but lowers graphics:
Vsync (on/off)

Windowed mode:
-w

Start with desired resolution (in pixels):
-r(width) x (height)

Fullscreen mode:
-f

Disables sound:
-nosound

Get 1000 Cash:
Kaching

50,000 Simoleans:
Motherlode

Puts the game in slow motion. Enter any number that 0 through 8 (0=fastest and 8=slowest):slowmotion

Makes your Sims larger or smaller:zAllows you to change elevation of floor tiles:
Boolprop constrainFloorElevation false

Disables the ability to change elevation of floor tiles:
Boolprop constrainFloorElevation true

Turn on aging:
Aging on

Turn off aging:
Aging off

Turns off facial bounding limitations. It prevents the normal corrections the game will make for two parents with very different facial structures:
FaceBlendLimits (on/off)

You can invite more people to your parties:
IntProp maxNumOfVisitingSims 8

Takes off censoring:
Intprop censorgridsize 0

You can tell what social reaction will happen before you do it:
Social_debug

Turns Postprocessing on:
BoolProp enablePostProcessing true

Turns Postprocessing off:
BoolProp enablePostProcessing false

Set to true and cars will have more detail in neighborhood:
Boolprop carsCompact (True/False)

Set to true to show lot information:
Boolprop lotInfoAdvancedMode (True/False)

Set to false to place floor tiles outside lot:
Boolprop locktiles (True/False)

Set to false to remove removes water (ponds) from lots:
Boolprop lotWater (True/False)

Set to false to remove floorpainting on lot:
Boolprop lotTerrainPaints (True/False)

Set to false to remove props like rocks and towers from neighborhood:
Boolprop displayNeighborhoodProps (True/False)

Set to true to light up objects continuously instead of only when used:
Boolprop allObjectLightsOn (True/False)

Set to false to remove roads from neighborhood:
Boolprop displayNeighborhoodRoads (True/False)

Set to false to removes trees/plants from neighborhood:
Boolprop displayNeighborhoodFlora (True/False)

Set to false to remove water from neighborhood:
Boolprop displayNeighborhoodWater (True/False)

Set to false to removes house graphics from neighborhood:
Boolprop displayLotImposters (True/False)

Set to false to remove bridges from neighborhood:
Boolprop displayNeighborhoodRoadsWithModel (True/False)

Set to false and lots will not light up when highlighted in neighborhood:
Boolprop lotTerrainLighting (True/False)

Set to false to remove removes shadows on objects outside house:
Boolprop objectShadows (True/False)

Set to false to remove shadows on objects inside house:
BoolProp guob (True/False)

Set to true and walls will no longer cut away from selected